alatavicus和batalinii的基因组分析(禾本科:小麦科)

K. Jensen, D. R. Dewey, K. H. Asay
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引用次数: 8

摘要

羊腹草(草)A. Love和E. batalinii (Krasn)A.对爱进行了研究,以确定(i)减数分裂行为,(ii)繁殖模式,(iii)两个物种之间的关系,(iv)基因组构成,以及(v)两个物种最合乎逻辑的分类分类。培育了一系列阿拉塔乌、巴塔利乌和6个“分析”种的F1杂交品种。染色体配对在中期I进行研究,以确定基因组的相似性或差异性。结果表明,alatavicus和batalinii是具有相同基因组公式SSYYXX的单生、自育的异源六倍体(2n = 42)。alatavicus和batalinie的F1杂交在I中期有7%的细胞完全配对(21个二价),其余细胞几乎完全配对。杂种F1的高染色体配对和部分育性(4粒/株)表明两种亲缘关系密切。结果表明:alatavicus或batalinii与以下“a…
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Genome analysis of Elymus alatavicus and E. batalinii (Poaceae: Triticeae)
Elymus alatavicus (Drob.) A. Love and E. batalinii (Krasn.) A. Love were studied to determine (i) meiotic behaviour, (ii) the mode of reproduction, (iii) the relationship between the two species, (iv) genomic constitutions, and (v) the most logical taxonomic classification of both species. A series of F1 hybrids between E. alatavicus, E. batalinii, and six "analyzer" species were developed. Chromosome pairing was studied at metaphase I to identify genomic similarities or differences. The results showed that E. alatavicus and E. batalinii are caespitose, self-fertile allohexaploids (2n = 42) with the same genomic formula SSYYXX. The F1 hybrids between E. alatavicus and E. batalinii had complete pairing (21 bivalents) at metaphase I in 7% of the cells and almost complete pairing in the remaining cells. High chromosome pairing and partial fertility (4 seeds/plant) in the F1 hybrids shows that the two species are closely related. Hybrids were obtained between E. alatavicus or E. batalinii and the following "a...
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